Friction coupling



.9 19 Aug 27 F. LOBE FRICTION COUPLING Filed Dec. 25, 1926 Patented Aug. 9,1927; i i 1 i I i FRITZ LoBE, orBB snAU; GERMANY;

This invention relates to a friction }cou-, ing'forkl-t'u The hub: :19 of casing1 1 is of pling, -by which a stationary shaft has to be square QIO S C QH and'onjthishi1b fri,otion', 1 gradually broughhfro n a driving shaft r-e -disks 20 m looselyn'iounted "which; have volving at high speegzhfromjthestate of rest eaeh ajsquarecentral aperture sothatsaid V 5 t f hes peed atq which ,t-heydriving shaft ref QfilQPldi$k$ QQ' Q QQP b l T Q Shifted ill Volves,' tl ;is 'tbein'g eiiected without the inter; he f fl Qd l C t Ql1Q1l hub lt), being however j mediary of transmission gears successive? secured against-rotation on.thi h b to be engaged,"and' without wearing of the n the housing verticalbolts-l'? are fixed coupling elements This coupling is deon wliietrfaacm disks 18' are lOOSQlY'IIlOUDt-F vr signed for instance for the starting of cen- ClSO t at they can be freely shifted'on-the Which trifuges froma shaft revolving at great b 11 5, in axial direction being howiever s'e speed or. for the starting'of motor cars. curec l. against rotation with regarditoi'the The improved coupling is shown, by way housing 5.1 The-friction disks118'and am f I .7 ofexample, in the accompanying drawing in alternately arranged so that betweemevery -v 1. p a o 7 two disks 18 one disk 20 is' situated. "70 c Y, Fi 15 v ti l ti g .i The operation of the mechanism is as fol-" Fig. 2 isa section online IIII of Fig. 1, 'lQWs:-'

' V viewed from below. Q I Y If drivenishaft 2, is at festiandithe I a Fig. 3 is a section on line TIL-1T1 of-COLlPllllgiS disengaged by the hand wheel-16 Y I 20 Fig. 1, viewedfrom above.

- SO that the friction, disks 18 and. 20stand 7 5 1 s the drivingshaft',which is "revolving loosely the one at theide fth other 7 at high'spee'd, and 2 is the driven shaft detoothed wheel 13 of shaftc2 is antes-e st signed to be grad'ually'brought' from the O and the shaft 1, driven at'higl'tspriedifrom i speed to the speed of the driving shaft 1." theenginebyl the disk 21,'drivesthe"ispur The driving shaft 1 is journalled in a bearwheel 12 through the'transmission gear 858g,

h1g3 and the driven shaft r2 'is journalled 10, 9v and 11, said spurwheel' 12 rotating at in a bearing 4:. ,A housing -5 is mounted on a very low speed around the stationary spur I a y I (the driving shaft 1 so that it can freely rowhee1g13. The housingf5 is;o oonsequently M f tate around the same." Inthis housingtivo slowly rotated with regard, to the stationary p auxiliary shafts 6 and 7 arejournalled. Y casingll'and in the samedireetion in which: 5

On the driving shaft 1 a spur wheel 8 is shaft'l"revolves. The friction disks 20 of i I v keyed.- On the auxiliary shaft (S two spur= the casingjl i are still stationary, whilst-the wheels 921ml 10 are keyed, and two "spur friction disks18;-of housing?)'rotate'slowly'... wheels'll and '12 are keyedon the auxiliary between the friction disks 20. VVhen, by the shaft 7, a spur wheel 13 being keyed on the hand wheel 16 and by the disengagingfork so driven shaft 2. The spur WheelS co-oper lathe-casing 1 4 isshi'ftedon shaft2 towards g ates with the spur wheel 10, and the 'spur' 'thehousing'o, thefriction disks 18 and 20 are Wheel 9 with the spur Wheel 11 and the spur fpressed 'on one another, whereby friction is; y

wheel 12 with the spur wheel13. The diame; produced betweenfthese vdisks. When the,

40 ters of the spur wheels are sele'ctedso that at friction becomesso great that the shaft 2 is'tfi i a rapid revolving 'movement of shaft 1- a rotated it will be rotatedatifirst at the same transmission into slows'peed'takes place up slow speed at which the. housing-5 r t t f vj to the toothed wheel 12. Suppose the shaft At thispocasion the spurvwheel 13 is rotated- 2 be a rest and t shaft 1 r v at gh also. As therevolving speed ofthe driving j 'Thespul Wheel lgflwiurt-henr rotdtev shaft remains the c sa'nleythej revolving Jim-l V slowly around thefs'purwheel l3 which is aitgspeed 0f the housing 5will1be inoreased by; rest, whereby the housing 5 1s made to ro-- the rotating spurwheel 13fso' that, when the c tate at the same slow speed around the coupling is: further engaged, the "rotating q vshaft l". speed of thespur wheel 13 'is increased again q o On theshaft; 2 a casing" mounted ;without-any mutualshifting of'the friction .105

shiftable in axial directionf and prevented'disks 20 and 18 wortli Inentioningasothat .1 from rotatingon shaft 2 by meansEof "a key almost no swearing-10f the friction d sks can r and and groove connection. The shifting take place. Thismutual .aetion' continues.

of casing 1 1 on the shaft 2-c ca1n be controlled until} the casing' let is'rigi'dly coupled with. by a hand wheel 16 by means of adisengagthe housing '5 by the friction disks 18 and20 and the driving shaft 2 revolves at the same" revolving speedas shaft 1.

1' claim '7 A friction coupling for revolving a shaft at rest, from a drivingshaft' Whioh'revolves V at, high speed, graduallyfrom the zero speed f to the speed of the driving shaft, a housing. "loosely mounted on said driving shaft,"tvvo auxiliary vertical shafts in said housing, a-'- spurwheel keyed on said driving shaft, two

isaid housing andbeing ofdifferent diameters so that at high speed revolving of said driving shaft the upper spur Wheel on said auxiliary shafts rotates slowly around said spur heel keyed on said driven shaft and said housing is sloWly' rotated on said driving shaft, a casing shiftably mounted on said driven shaft, frictiondisks shiftably mounted on the hub of said casing, bolts upwardly directed from said housing, and friction disks loosely mounted ,on said bolts andlocated one between every tWo 'friction disks of said casing for gradually coupling said casing withi SdlClhousing and consequently said driven shaft With said driving'shaft:

affix mysignature;

In testimony whereof I v FRITZLQBE; 

